Definition of Tank

Noun: tank tangk

(military) an enclosed armoured military vehicle; has a cannon and moves on caterpillar treads
- army tank, armored combat vehicle [US], armoured combat vehicle [Brit, Cdn]
A large (usually metallic) vessel for holding gases or liquids
- storage tank
As much as a tank will hold
- tankful
A freight car that transports liquids or gases in bulk
- tank car
A cell for violent prisoners
- cooler

Verb: tank tangk

Store in a tank by causing (something) to flow into it
Consume excessive amounts of alcohol
Treat in a tank
"tank animal refuse"
[N. Amer] Fail badly
"How many contracting businesses will tank this year?";
- crash and burn, bomb